Wound field generator system featuring combined permanent magnet generator excitation with exciter stator

Patent metadata

Field	Value
Publication number	US-2016294238-A1
Application number	US-201514673319-A
Country	US
Kind code	A1
Filing date	Mar 30, 2015
Priority date	Mar 30, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

The present disclosure broadly relates to apparatuses and methods for generating electric power. More particularly, the present disclosure relates to a self-excited electric generator. The self-excited electric generator may include auxiliary windings to provide a source of electricity to an associated generator control unit (GCU). The apparatuses and methods of the present invention may provide added benefits of reducing excitation requirements from the GCU. Thereby, the apparatuses and methods may reduce cost, weight, and size of an electric generator, and may increase reliability of associated systems.

First claim

What is claimed is:

1 . A self-exciting electrical generator, comprising:
a main generating including a rotor and a stator, wherein the rotor includes a plurality of main stator windings and a plurality of auxiliary windings, wherein the main stator windings include a first gauge wire and the auxiliary windings include a second gauge wire, wherein a second diameter of the second gauge wire is less than a first diameter of the first gauge wire, wherein the main stator windings are configured to supply electrical power to an electrical load bus, wherein the auxiliary windings are configured to supply electrical power to a generator control unit, and wherein the rotor includes a plurality of field windings configured to receive electrical power from an exciter.

2 . The self-exciting generator of claim 1 , further comprising a rotating rectifier.

3 . The self-exciting generator of claim 1 , wherein the main stator windings are arranged in a three-phase configuration.

4 . The self-exciting generator of claim 1 , wherein the auxiliary windings are configured in a three-phase configuration.

5 . The self-exciting generator of claim 1 , wherein the main stator windings are located within the stator closer to the rotor relative to the auxiliary windings.

6 . The self-exciting generator of claim 1 , wherein the rotor windings are arranged in a single phase configuration.

7 . The self-exciting generator of claim 1 , wherein the main stator windings are electrically isolated from the auxiliary stator windings.

8 . A self-exciting electrical generator assembly, comprising:
an exciter generator; and a main generating including a rotor and a stator, wherein the rotor includes a plurality of main stator windings and a plurality of auxiliary stator windings electrically isolated from the main stator windings, and wherein the rotor includes a plurality of field windings configured to receive electrical power from the exciter generator.

9 . The self-exciting electrical generator assembly of claim 8 , wherein the exciter generator includes an exciter stator having a plurality of permanent magnets.

10 . The self-exciting electrical generator assembly of claim 8 , wherein the exciter generator includes an exciter stator having a plurality of exciter stator windings.

11 . The self-exciting electrical generator assembly of claim 8 , wherein the exciter generator includes an exciter rotor having a plurality of exciter rotor windings.

12 . The self-exciting electrical generator assembly of claim 11 , wherein the plurality of exciter rotor windings are arranged in a three-phase configuration.

13 . The self-exciting electrical generator assembly of claim 8 , wherein the main generator further comprises a rotating rectifier, wherein the exciter generator includes an exciter rotor having a plurality of exciter rotor windings, and wherein the exciter rotor windings are connected to the rotating rectifier.

14 . The self-exciting electrical generator assembly of claim 13 , wherein the plurality of exciter rotor windings are arranged in a three-phase configuration and the rotating rectifier is three-phase.

15 . An electrical generator system, comprising:
a generator control unit; an exciter generator; and a main generator including a rotor and a stator, wherein the stator includes a plurality of main stator windings to supply electrical power to an electrical load bus and a plurality of auxiliary windings to supply electrical power to the generator control unit.

16 . The electrical generator system of claim 15 , wherein the main stator windings include a first gauge wire and the auxiliary windings include a second gauge wire, wherein a second diameter of the second gauge wire is less than a first diameter of the first gauge wire.

17 . The electrical generator system of claim 15 , wherein the main stator windings are electrically isolated from the auxiliary stator windings.

18 . The electrical generator system of claim 15 , wherein the exciter generator includes an exciter stator having a plurality of permanent magnets.

19 . The electrical generator system of claim 15 , wherein the generator control unit is configured to receive a main generator output current signal and/or a main generator output voltage signal.

20 . The electrical generator system of claim 19 , wherein the generator control unit is further configured to provide an exciter generator output signal that is based, at least in part, on the main generator output current signal and/or the main generator output voltage signal.

Assignees

• Honeywell Int Inc

Inventors

• Gehrke Jens
• Waddell Simon
• Pearson Wayne
• Xu Ming
• Anghel Cristian

Classifications

• H02K21/04

  Windings on magnets for additional excitation {; Windings and magnets for additional excitation} · CPC title

• H02K19/34

  Generators with two or more outputs · CPC title

• H02K19/28

  for self-excitation · CPC title

• H02K3/16 Primary

  for auxiliary purposes, e.g. damping or commutating · CPC title

• H02K7/20

  Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters · CPC title